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1. (WO1997019479) POSITIVE PLATE ACTIVE MATERIAL FOR ALKALINE STORAGE BATTERY AND POSITIVE ELECTRODE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/019479 International Application No.: PCT/JP1996/003159
Publication Date: 29.05.1997 International Filing Date: 28.10.1996
IPC:
C01G 53/00 (2006.01) ,H01M 4/52 (2010.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
G
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
53
Compounds of nickel
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
48
of inorganic oxides or hydroxides
52
of nickel, cobalt or iron
Applicants:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. [JP/JP]; 1006, Oaza Kadoma Kadoma-shi Osaka 571, JP (AllExceptUS)
OKADA, Yukihiro [JP/JP]; JP (UsOnly)
OHTA, Kazuhiro [JP/JP]; JP (UsOnly)
MATSUDA, Hiromu [JP/JP]; JP (UsOnly)
TOYOGUCHI, Yoshinori [JP/JP]; JP (UsOnly)
Inventors:
OKADA, Yukihiro; JP
OHTA, Kazuhiro; JP
MATSUDA, Hiromu; JP
TOYOGUCHI, Yoshinori; JP
Agent:
HIGASHIMA, Takaharu ; Higashima & Ishii Patent Office Daiko Building 2-14, Umeda 3-chome Kita-ku, Osaka-shi Osaka 530, JP
Priority Data:
7/30446322.11.1995JP
8/17008628.06.1996JP
Title (EN) POSITIVE PLATE ACTIVE MATERIAL FOR ALKALINE STORAGE BATTERY AND POSITIVE ELECTRODE
(FR) MATERIAU ACTIF DE PLAQUE POSITIVE POUR ACCUMULATEUR ALCALIN ET ELECTRODE POSITIVE
Abstract:
(EN) A positive plate active material for alkaline storage battery which has a high charging efficiency even at high temperatures and a positive electrode are disclosed. The positive plate active material is composed of particles of aggregates of crystals of nickel hydroxide and the surface layer of each particle contains a solid solution of nickel hydroxide and Mn. The solid solution is crystals grown on the crystals of nickel hydroxide and/or crystals independent of the crystals of nickel hydroxide. The content of Mn in the solid solution is more than 1 mol % of the total amount of metallic ions in the solid solution and less than 10 mol % of the total metallic ions in the nickel oxide active material and the solid solution. The positive electrode for alkaline storage battery contains the active material and at least one element selected from among Ca, Sr, Ba, Cu, Ag, Cd, Y, and Yb.
(FR) Cette invention concerne une électrode positive ainsi qu'un matériau actif de plaque positive pour accumulateur alcalin, lequel matériau possède une grande efficacité de charge même à des températures élevées. Le matériau actif de plaque positive se compose de particules d'agrégats de cristaux d'hydroxyde de nickel, la couche de surface de chaque particule comprenant une solution solide d'hydroxyde de nickel et de Mn. Cette solution solide est obtenue par la croissance de cristaux sur les cristaux d'hydroxyde de nickel et/ou sur des cristaux autres que les cristaux d'hydroxyde de nickel. La teneur en Mn de la solution solide est supérieure à 1 mole % de la quantité totale d'ions métalliques présents dans la solution solide, et inférieur à 10 moles % de la totalité des ions métalliques présents dans le matériau actif à base d'oxyde de nickel et dans la solution solide. L'électrode positive pour accumulateur alcalin comprend ce matériau actif ainsi qu'un ou plusieurs des éléments choisis parmi Ca, Sr, Ba, Cu, Ag, Cd, Y et Yb.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP0809309